added the license to package.json
added the license to package.json

just to kill the warning when npm installing
aciccarello/typedoc,TypeStrong/typedoc,PolymerLabs/typedoc,sebastian-lenz/typedoc,sebastian-lenz/typedoc,SierraSoftworks/typedoc,TypeStrong/typedoc,dominic31/typedoc,PolymerLabs/typedoc,TypeStrong/typedoc,sebastian-lenz/typedoc,dominic31/typedoc,PolymerLabs/typedoc,aciccarello/typedoc,aciccarello/typedoc,SierraSoftworks/typedoc,SierraSoftworks/typedoc,dominic31/typedoc